Installing A Duplex Unit - Lexmark T640 User Manual

Installing a duplex unit

The duplex unit attaches under the printer, below the standard tray and above any drawers.
Note: Two optional duplex units are available. The 250-sheet duplex unit only works with printers that have
a 250-sheet standard tray, and the 500-sheet duplex unit only works with printers that have a 500-
sheet standard tray. Make sure you have the appropriate duplex unit for the tray size installed in the
printer.
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Place the duplex unit on top of any installed drawers or the table or printer cabinet where you plan to use the
printer.
The tab, round peg, and square holes on top of any drawer help you position the duplex unit so the edges are
aligned properly. Make sure it is securely in place.
Installing and removing options
Tab
Installing a duplex unit
Square hole
Round peg
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